Doffing mechanism.



T. A., H. A. 6.1. BOYD.

nomma MECHANISM.

APPLICATION FILED NOV-2, 1914.

Patented Oct. 1, 1918.

2 SHEETS-SHEET l.

T. A., H. A. (SI1. BOYD.

DOFFING MECHANISM.

APPLICATION FILED Nov.2. I9I4.

Patented Oct. 1, 1918.

2 SHEETS-SHEET 2.

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lm' .4 TTOR/VEYS msn( vx ramon. I

THOMAS A. BOYD, HAROLD A. `BOYD, AND JAMES BOYD, or GLASGOW, SCOTLAND.

nasosi. ,D

To all 'whomc't may concern:

Be it known thatwe, THOMAS ALEXANDER BOYD, I-IAnoLD lARTHUR BOYD, Vand JAMES BOYD, all subjects-Of King George of Great Britain'an'd Ireland, residents of Shettleston Iron Works, Glasgow, Scotland, have invented `a certain new and useful Improvement in Doifing Mechanism, of which the following is a specification. According to 'this invention which refers to doiiing` mechanism `in `flier frames for spinning, twisting and the like, La bobbin carrier is used which is adapted Vtoreceive and carry an empty bobbin tothe center of the Spinning spindle and also to pushthe full bobbin` which hasbeen doffed vfrom the-Said Spinning spindle-clear of the same. The bobbin 'carriers-referred to in some casesareinounted behind the Spindle so astopush the full bobbins to `the front Side, lof the frame andthey are so arranged as toy be capable ofb'eing movedY toa position below and in front of the spindles to enable the worker to place the empty bobbin in the said carrier.l In one application of these carriers the bobbin is so held that it may be raised by thev liftingrail on tothe spindle', the carrier thereafter .receding clear4 ofwthe empty bobbin "and spindle; l

Further according to this invention, when the full bobbins are pushed oftl thebuild'en railsby the bobbin carrierthe` bobbins fall between la pair of `blades placed onvthe top* of a bobbinI box and passing from endto end offtheframe.' One :of these-blades'is fixed-along theback top `edge of the bobbin box. The other blade is carried on a set of levers adapted-to move the said blade to the front side of the bobbinbox, thusallowing'space lfor the bobbins to".fall between the two blades. At the proper mo-` ment the levers close the `blades "andsever thel threadshwhich extend froml the full bobbins tothe emptyubobbins onnthe spin" dles. The various operations of dofling such as the moving of thefnll-bobbins Aolf the spindles andthe pushing of them into thebox,also the -mving"of the empty bobbins onfto `thefspindles are-effected by what is Y called the doliing Ashaftwhiolifis turned'yirst in Vone direction and then lin l the Opposite direction. According to'V thisfinventionl in the case of frames in whichthe` full' bobbins are lowered olf the spindles at their bottom .end when the spindles are Stopped for donf- Specication of Letters Patent.

Domine MnoiiAnisM.

Patented oet, i, rois.

Applicatonled November 2, 1914.. Serial `1\l'o. 869,965.

`sothat the fliers may unwind from the said fuill bobbins suiiicient length of yarn to permit the said bobbinsbeing lowered off the spindles without at theV same time carryingcoils of yarn which would come over the heads of the bobbins, getting around the spindles. The lifting rails in this case are lowered by means of a let-off motion which permits""th e'traverse .motion to remain at rest during the operation -of doiling.

Accompanying this Specification are two sheetsof drawings illustrating same, and in which-` 'i l Figure `-l is' an end elevation of a spinning frame, i partially broken away, in which in invention `is illustratively embodied; 1

isla side elevation andplan `of a detail; f Y `f gFig. 3 isa detached elevation of the Ope`r` ative connection between shafts 9 and 15; Fig 4 is aI front elevation of the latch for holding the lever 12;- Fig. 5 is an end elevation of thebuilder motion; Y

Figs. 6 and tion `and' plan ofV amodified bobbin carrier; andv j f Fig.,A 8 is a side elevation ofthe lever `12 and catch 23 in doing position.

`In carrying lout our invention in onefarrangement applicable to; a worsted spinning these being o-f ordinary and welllnown construction.` `0n the? `frame. behind the Spindle 2 we mount rack shaft brackets 7 having bearings 'carrying rack* slides 8 which are horizontal 'and atright angles to the foot Step rail 8. These rack` slides 8 are placed at a suitable height to support and move the bobbin carriers hereafter described.` On theunderside of the rack slides teeth 81 4` are formed.` Below the rack slides "8 we carryy on bearings in the framing ar-ack shaft' Qparallel with the step rail 3. lfOnthisl rack shaft 9 we mount a 7 are respectively side elevarack :pinion 10"below`each rackslide and gearedtsame` soA thatby revolving the rack shaftftheraclr` slides 8 move to and fromthe spinning spindle-12. Atthe front endof th i'aGk `Slides are bearings 82 in which We plie@ a bottin Cari-i611 Shaft 11 and on the end of this shaft is a hand lever 12 to'turn the said 'bobbin carrier shaft 11 as hereafter described. On the bobbin carrier shaft 11 We mount behind each spindle apbobbin carrier 13 extending from the said shaftupward and forward toward the spin# die. At the upper and frontend of the bob- A i the bottom of the cup, Fig. 2 132 to clear the stem of the bobbinf The hole is cutout .to the periphery lof the cup .at its front side.

VIt Will thus be understood that the empty lbobbin 11 can be passed into the cup and 1 lowered until the top flange rests inthe cup,

the bobbin hangingloosely downward.A The lever 12 normally rests upon the bracket 213` of a catch ,lever 21, hereinafter referredto. i/Yhen empty bobbinsare to be .inserted in the bobbin carriers 13, the catch 1217613.21 i1s.1 sWung out of engagingposition and' the lever12 lowered by means 4of its handle 122 until it restsagainst the lower bracket 214 onfthecat-ch lever 21,; which has been: returned to position. moved `forward by rotatingthe shaft 9 (by means of ,a crank handle,l notfshovvn)y until the cups113 are jin accessible position. `The catch 23 on the lever. 12 now engages the bracket 214 on the catch lever 21fand holds the lever 12 in this out position against Y the pull of the counteriveight 21 at the end of a chain passing over the chain Wheel 212 fast onthe shaft 9 of the rack pinion 10;

1 After the empty bobbins have been placed in position in theircups 13', tliecatcl1.leven 21is .swung out of engagement` with the catch 23, the lever 12 being thereupon drawn inward `by the counterweight121 and lifted :f by the handle 122 intoengagement with the upperbracket 213,4 as indicated in1Figs.11 and11,V as shown perhaps more clearly 1n the drawings of our corresponding Brit-ish Pat ent No. 19.909, of 1911. Behind the spindlesY We mount in bearingson the framing a doffe ingshaftl passing from end to endofthe frame. On this shaftwve mountchainjpulleys-16' with `chains 1710 lovvfer andAV raise thestep rail; and also the builder rail 1,1 so that by'turning the doiing shaft-115 by lever or` other mecl'ianisminone direction and then' inV the opposite direction thejrails and 1 arefrst lowered and then raisedagain to `Working position.; 11s-thebuildsrnrail111 1 descends the fulll bobbin` 181resti-ngo1n them I also descendsuntiljit is clear of thefspindle' 2, :Qn the d-oiiing' shaftY 15V,4 Fig. 3, above referred,te7 we alsoinount a chain pulley 19 'and chain 12() VWhit-h iscarried to achain pulf .ley 211611 the rack shaft Bymeansof this afs the dofng shaft 15 isboing turned Yto lever the and 1 therack shaft 9fis The lever 12 is `then,

also turned and moves the bobbin carrier 13 with the empty bobbins 11 toward the full bobbins 18 which are clear of thespindles when the builder rail 1 is lowered. The foi-Ward' movement of the bobbin carriers 11 continues until they press the fullbobbins 18 off the 'builder rails 1 causing them `to fall 4into the bobbin box 22' hereafter described. The empty bobbins 11 are then be-f lovv the spindles .-2. 'llhewleveii 12 with theY bobbin carrier 18 is ytemporarily Vdetained in this positionby the catch-28 pivotedon the lever'12..1 This catclrhas a1shoulder1`23 and nose 232, andslidesfivith thelever12 on `a `bracket 21S-on a catch lever 21 80 pivoted on the frame. VOn ,theI outward movement of the flever, theshoulderr 23 of the catch'23 eventually passes the bracket 213,andnthe catch drops1 by gravity luntil its nose 1282 vishalted `by the pin 23131` on. 85 thelever 12.- yThe shoulder 23 on the catch 2311vill now e'ngagethebracket 2131onthe catch lever 21 and prevent the` returngmove'- ment of 4the lever 12 underthepullof; its 1:` counterw'eight.2 1, `thus holdingg-1the lever in 90 outpesition; After-the full bobbins have fallen into the box`122 .and the empty fbob-` bins 11havefbeen-1thus brought to position beneaththfe spindle 27 the dofling shaft 15; is rotated in opposite direction ,in t'order-1to1' 95 raise the rails 3 and 1` again.-` As they rise, the empty bobbins l1 are lifted from the carrier l13 onto 1the spindles2. `1Simulta-= neously with `the rise ofthe rails 3 andy1, the latch 231s freed, this being accomplished by a brackets fixed on the end'ofathe step r-a1ilf3 Which,-as the rail rises, engages a` eo-` operating.1 projection 12 on 'the lever V12,1 by which the lever `is lifted, carrying with it the 1 catch 213.` -As soon as the.should'er1`23 105 clears the bracket 213, thepu-llof the counteriveig'ht, 21 rotates the pin-ion 1.0, thus-au1 tomatically returning hewleverj12 to `its normal 1in7position shown in Fig. l. 1 f 1 1HBelow and in front of thestep rail 3 We 11o ing along the framewk cooperating'bla-de` 115 28, ,extendinglengthwise ofthe frame;` is cai-median .frQnt--lofithe XedrbladeH25 @by a set of swinging" levers 265 centeredpon the shaft 27,' below `the bobbinbox,` so ,thatrthef blade 11281swings-aoross thebobbin box and- 12a* passesl vunderfthe fixed `blade 2 5. fjsWhenithe full bobbinsare. 1pushedof1 thelbobbinra'il Y 1they fallginto the bobbinfboii-22 asafore described btwveenfthe blades 25.`a1id1.28'iThe.1 1 yarn. from'therfnllsbobbintin tiiebobbin 'box- 1,125`

remains intactrright up to the;flier"-on.1the Spindle 12-.1 rWhen the empty-bobbin fl11=is` placed on the spindle 2 Aand Vspinning is .1re-Y sinned the moving blade 28: is closednyany suitable hand 1 or` `foot operated mechanism 13o and grips the yarn atv allthe spindles, sev-l [stopp'edland the cylinder isl reversed so as ering it fromthe full bobbins fin the 190x722 andqthe empty bobbins `onthe spindles.

When the bobbins 18 are full .and vready tofdoff* from' thespindlesthe Eframe iS to causethefliers to unwind from the full bobbins 13 "sufficient lengthof vyarn to allow thesaid bobbins to descend :without causing thecoils of yarn which wouldcome over the spindle. l l

Thebuilder `railsilu-this machine are operhead A of -the l around the ated by the well-known `Seaifetraverse mo-" tion in which an sliding block operated by a heartfcalmand` lever m-oves to and fro and by means of la chain gives an end motion-to -a traverse bar extending along the xframe, the traverse bar in turni, giving thervertical motion required .by the builder rails. In this "jcase the builder rail is lowered beyond the usual'niovement given by the traverse mechanism. This is accomplished bymeans of an extension` of the chain Awhich connects the traverse motion with the builder rail.

"We: shall noiwi describe how `this extension of the chain is accomplished as applied to the Scaife motion referred to. 'We-employ f Fig. 5 a Scaife traverse motion of the usual description with a slide 29 moved to and fro by a heart cam 30 and lever 31 giving a pulling motion to a traverse bar 32 extending along the frame and in turn operating in the usual manner the pokers of the builder rail 4, Fig. 1. Instead of having the chain 331 referred to fixed to the sliding block 29 we mount on the sliding block a chain pulley 33 aroiuid which we car the chain 331 which is -to be let off to lower the builder rail 4, Fig.` 1, beyond its traversing movement for the purpose of dofing.` The chain 331 is carried from the chain pulley 33 on the slide 29 referred to upward to the doiing shaft 15 where it is fixed to a chain pulley 332. When the doiiing shaft 15 before described is turned `to lower the rails it lets off the traverse chain 331 and so extends the In `a second fzarrangement of bobbin car-` rier adapted to suit spools orbobbins having a iange onlyl at one end, we employ Figs. G and 7, all theparts above described exceptving the bobbin carrier 13. Instead we mount on the "bobbin carrier shaft 11, Fig. 1 aforedescribed, ahorizontal lever 34 projecting forward and `havingat itsend neXt to the spinning spindle a vertical stud. 341. On this stud we mount a`sliding bracket 35 the front face of same next to the spindle having anV open gab` top andbottoml These gabs are made to suit thediameter of the `spool 36 top and bottom. `The lower gab has apin 351 which passeslinto the spool 36 l and supports it vertically. The pin referred afterthe latter-is heldby the spindle. When the spools 36 are full andthe rails 3`low-` ered, the bobbin-carriers 34 are moved to the center ofthe spindles, at the `same time pushing thefull bobbins "oif the builderrails 4. `The` builderL rails 4 uare then raised carf rying the empty spool 36 and its sliding carrier 35 upward, the spool-carrier 35 slidingV onlthe vertical stud 341` before described. 5r-s soon asthe spindles-have sufficiently entered theempty spools 3 6 Ato hold them `in` position tliebobbin carriers `34 are made to recede as in the foregoing first arrangement.

Having now particularly described and ascertained the nature of our said invention,

l we liereby.declare that what we claim is 1;In spinning, twisting, and like frames,

- mea-ns for separating and approaching said supports, anda bobbin dofiing mechanism comprising a carrier arranged behind the spindle and adapted to carry an empty bobbin, means for moving said carrier forward to present the empty bobbin substantially in alinement with the spinning spindle when said supports are separated, and means for moving said carrier toV position beneath said bottom support during the pinning operation to receive an empty bob- 2. In spinning, twisting, and like frames, a spinning spindle and a top support therefor, a bobbin and a bottom support therefor, means for separating and approaching said supports, and a bobbin dofling mechanism comprising a reciprocating member, an arm pivotally mounted thereon behind the spindle and forming a carrier for an empty bobbin, means for advancing said reciproeating member to move said bobbin carrier into substantiall alinementwith the spinrated, and means for swinging said carrier arm dow-n beneath the bottom support to receive an empty bobbin in the retracted position of said reciprocating member.

3. In spinning, twisting and like frames, a spinning spindle and a fixed top support therefor suspending the spindle from its upper end, a vertically-displaceable, bob-` bin-supporting builder rail and a bobbin doiling mechanism comprising a bobbin carrier arranged behind the spindle and means 'for moving the same forward beneath the i spindle when the builder rail is down to place an empty bobbin thereon and allowing the bobbinto be lifted from the carrier by the rise of the builder rail, substantially as described. t Y

4. In spinning, twisting and like frames, a bobbin box to receivelled bobbins in combination with doling mechanism, comprising a pair of blades between which the full bobbins pass on doliing, one ofsaid blades being stationary and the other movable, said blades extending' longitudinally of the frame and serving a plurality of, spindles simultanedie, and means for rectilinearly .displacing saidI rack slideto advance the bobbin carrier vuitwo subscribing witnesses.`

beneathl the spindle and retract the same therefrom, for the'purpose described. t

6. In spinning, twisting'y and like frames, a top-supported `spinning "spindle, a ibnilder rail adapteddzobeA lifted and lowered beneath the same, a bobbi-n carrier `supported behind (the spindle and means Vfor advancing" said carrier to positionfbeneath the spindle,.

while the rail is lowered, andretracting it after the bobbinfhas beenfliftedltherelroin by the rising rail, substantially as described.

In testimony whereof Awe have signed our namesvto` this spec'iliication,l in 1the presence T. AQJBOYD.

Witnesses:'V "n e JAixrns'CUNNiNeHAM, t JOHN ITIORNELL.;v

July iota 1916, B. n. nl, France. ,llitnessa l* I .Copies `ofthis patent-,may beobtanedlfor've cents eacllby"addressingthe Cdniinilsslieii'eri'of Ifateizts" Washington,111).``

t ite-*Born ,A JAMES Berni' 

